How to Replace Your Subaru Legacy Battery in 5 Easy Steps

Are you tired of paying for costly battery replacements for your Subaru Legacy? Fear not, replacing your car battery is a relatively simple task that can be done in less than an hour and can save you a lot of money in the long run. In this step-by-step guide, we’ll walk you through the process of replacing your Subaru Legacy battery with ease.

What You’ll Need

Before we get started, here are the tools you’ll need:

  • Safety glasses
  • Disposable gloves
  • A socket wrench set with extension and ratchet
  • Anti-corrosion spray
  • New battery

Step 1: Prepare Your Work Area

First things first, ensure that you’re working in a safe and well-lit area. Please turn off the ignition and remove the key. Open the hood of your Subaru Legacy, and use the prop rod to hold it in place. It’s also good to put on safety glasses and disposable gloves before moving on to the next step.

Step 2: Remove the Old Battery

Locate the car battery, which should be at the front of the engine bay. First, loosen the negative cable connector by using the socket wrench to turn the nut counterclockwise. Then, repeat the same process for the positive cable connector. Remove the battery hold-down clamp and lift the battery out.

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Step 3: Clean the Battery Tray

Once the old battery is removed, take a few moments to clean the battery tray with a brush and a mixture of baking soda and water. This will help remove any corrosion or dirt that has accumulated over time.

Step 4: Install the New Battery

Using the battery hold-down clamp, secure the new battery in the battery tray. Connect the positive cable connector first, followed by the negative cable connector. Finally, use anti-corrosion spray to protect the terminals from future corrosion.

Step 5: Test Your New Battery

Now that your new battery is installed, it’s time to test it. Start your Subaru Legacy, and make sure everything is running smoothly. Congratulations! You’ve successfully replaced your Subaru Legacy battery.


How long does a Subaru Legacy battery last?

Generally, a car battery lasts between three and five years. However, several factors may affect the battery’s lifespan, including temperature, usage, and charging habits.

Do I need to recharge my new battery before installing it?

No, you don’t need to recharge your new battery before installing it. Modern car batteries come charged and ready to use.

Wrapping Up

Replacing your Subaru Legacy’s battery is a straightforward process that requires some basic tools and a little bit of patience. With this guide, you can confidently replace your car’s battery at home, saving you time and money. Remember, always wear safety glasses and gloves, and if you’re ever unsure, seek professional help.

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Alton Brobst

As a longtime Subaru enthusiast, Alton brings a wealth of knowledge and experience to our blog. From his early days of tinkering with engines to his current role as a certified Subaru technician, Alton has seen it all when it comes to Subarus. When he's not working on cars, he enjoys hiking and exploring the great outdoors.

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